LTC6992-1 (Rev. D) - Analog Devices

1 LTC6992-1 /LTC6992-2/LTC6992-3/LTC6992-41 Rev. DFor more information FeedbackTYPICAL APPLICATIONDESCRIPTIONT imerBlox: Voltage-Controlled Pulse Width Modulator (PWM)The LTC 6992 is a silicon oscillator with an easy-to-use Analog voltage-controlled pulse width modulation (PWM) capability. The LTC6992 is part of the TimerBlox family of versatile silicon timing single resistor, RSET, programs the LTC6992 s inter-nal master oscillator frequency. The output frequency is determined by this master oscillator and an internal frequency divider, NDIV, programmable to eight settings from 1 to 16384. fOUT=1 MHzNDIV 50k RSET, NDIV= 1,4,16 ..16384 Applying a voltage between 0V and 1V on the MOD pin sets the duty four versions differ in their minimum/maximum duty cycle. Note that a minimum duty cycle limit of 0% or maximum duty cycle limit of 100% allows oscillations to stop at the extreme duty cycle NAMEPWM DUTY CYCLE RANGELTC6992-10% to 100%LTC6992-25% to 95%LTC6992-30% to 95%LTC6992-45% to 100%For easy configuration of the LTC6992, use the TimerBlox LTC6992: PWM Web-Based Design Tool.

2 NPulse Width Modulation (PWM) Controlled by Simple 0V to 1V Analog Input nFour Available Options Define Duty Cycle Limits nMinimum Duty Cycle at 0% or 5% nMaximum Duty Cycle at 95% or 100% nFrequency Range: to 1 MHz nConfigured with 1 to 3 Resistors n< Maximum Frequency Error nPWM Duty Cycle Error < Maximum nFrequency Modulation (VCO) Capability to Single Supply Operation n115 A Supply Current at 100kHz n500 s Start-Up Time nCMOS Output Driver Sources/Sinks 20mA n 55 C to 125 C Operating Temperature Range nAvailable in Low Profile (1mm) SOT-23 (ThinSOT ) and 2mm 3mm DFN nAEC-Q100 Qualified for Automotive ApplicationsFEATURESAPPLICATIONS nPWM Servo Loops nHeater Control nLED Dimming Control nHigh Vibration, High Acceleration Environments nPortable and Battery-Powered Equipment6992 TA01aLTC6992 MODGNDSETOUTV+ PWMDUTY CYCLECONTROL(0V TO 1V) F1 MHz Pulse Width s/DIV6992 TA01bAll registered trademarks and trademarks are the property of their respective owners.

3 LTC6992-1 /LTC6992-2/LTC6992-3/LTC6992-42 Rev. DFor more information MAXIMUM RATINGSS upply Voltage (V+) to GND ..6 VMaximum Voltage On Any Pin ..(GND ) VPIN (V+ + )Operating Temperature Range (Note 2) LTC6992C .. 40 C to 85 C LTC6992I .. 40 C to 85 C LTC6992H .. 40 C to 125 C LTC6992MP .. 55 C to 125 C(Note 1)TOP VIEWOUTGNDMODV+DIVSETDCB PACKAGE6-LEAD (2mm 3mm) PLASTIC DFNTJMAX = 150 C, JA = 64 C/W, JC = C/WEXPOSED PAD (PIN 7) IS GND, PCB CONNECTION IS OPTIONAL457 GND6321 MOD 1 GND 2 SET 36 OUT5 V+4 DIVTOP VIEWS6 PACKAGE6-LEAD PLASTIC TSOT-23 TJMAX = 150 C, JA = 192 C/W, JC = 51 C/WPIN CONFIGURATIONS pecified Temperature Range (Note 3) LTC6992C ..0 C to 70 C LTC6992I .. 40 C to 85 C LTC6992H .. 40 C to 125 C LTC6992MP .. 55 C to 125 CJunction Temperature ..150 CStorage Temperature Range .. 65 C to 150 CLead Temperature (Soldering, 10 sec) S6 Package ..300 CLTC6992-1/LTC6992-2/LTC6992-3/LTC6992-4 3 Rev. DFor more information INFORMATIONLead Free FinishTAPE AND REEL (MINI)TAPE AND REELPART MARKING*PACKAGE DESCRIPTIONSPECIFIED TEMPERATURE RANGELTC6992 CDCB-1#TRMPBFLTC6992 CDCB-1#TRPBFLDXC6-Lead (2mm 3mm) Plastic DFN0 C to 70 CLTC6992 IDCB-1#TRMPBFLTC6992 IDCB-1#TRPBFLDXC6-Lead (2mm 3mm) Plastic DFN 40 C to 85 CLTC6992 HDCB-1#TRMPBFLTC6992 HDCB-1#TRPBFLDXC6-Lead (2mm 3mm) Plastic DFN 40 C to 125 CLTC6992CS6-1#TRMPBFLTC6992CS6-1#TRPBFLT DXB6-Lead Plastic TSOT-230 C to 70 CLTC6992IS6-1#TRMPBFLTC6992IS6-1#TRPBFLT DXB6-Lead Plastic TSOT-23 40 C to 85 CLTC6992HS6-1#TRMPBFLTC6992HS6-1#TRPBFLT DXB6-Lead Plastic TSOT-23 40 C to 125 CLTC6992 CDCB-2#TRMPBFLTC6992 CDCB-2#TRPBFLDXF6-Lead (2mm 3mm) Plastic DFN0 C to 70 CLTC6992 IDCB-2#TRMPBFLTC6992 IDCB-2#TRPBFLDXF6-Lead (2mm 3mm) Plastic DFN 40 C to 85 CLTC6992 HDCB-2#TRMPBFLTC6992 HDCB-2#TRPBFLDXF6-Lead (2mm 3mm)

4 Plastic DFN 40 C to 125 CLTC6992CS6-2#TRMPBFLTC6992CS6-2#TRPBFLT DXD6-Lead Plastic TSOT-230 C to 70 CLTC6992IS6-2#TRMPBFLTC6992IS6-2#TRPBFLT DXD6-Lead Plastic TSOT-23 40 C to 85 CLTC6992HS6-2#TRMPBFLTC6992HS6-2#TRPBFLT DXD6-Lead Plastic TSOT-23 40 C to 125 CLTC6992 CDCB-3#TRMPBFLTC6992 CDCB-3#TRPBFLFCP6-Lead (2mm 3mm) Plastic DFN0 C to 70 CLTC6992 IDCB-3#TRMPBFLTC6992 IDCB-3#TRPBFLFCP6-Lead (2mm 3mm) Plastic DFN 40 C to 85 CLTC6992 HDCB-3#TRMPBFLTC6992 HDCB-3#TRPBFLFCP6-Lead (2mm 3mm) Plastic DFN 40 C to 125 CLTC6992CS6-3#TRMPBFLTC6992CS6-3#TRPBFLT FCQ6-Lead Plastic TSOT-230 C to 70 CLTC6992IS6-3#TRMPBFLTC6992IS6-3#TRPBFLT FCQ6-Lead Plastic TSOT-23 40 C to 85 CLTC6992HS6-3#TRMPBFLTC6992HS6-3#TRPBFLT FCQ6-Lead Plastic TSOT-23 40 C to 125 CLTC6992 CDCB-4#TRMPBFLTC6992 CDCB-4#TRPBFLFCR6-Lead (2mm 3mm) Plastic DFN0 C to 70 CLTC6992 IDCB-4#TRMPBFLTC6992 IDCB-4#TRPBFLFCR6-Lead (2mm 3mm) Plastic DFN 40 C to 85 CLTC6992 HDCB-4#TRMPBFLTC6992 HDCB-4#TRPBFLFCR6-Lead (2mm 3mm)

5 Plastic DFN 40 C to 125 CLTC6992CS6-4#TRMPBFLTC6992CS6-4#TRPBFLT FCS6-Lead Plastic TSOT-230 C to 70 CLTC6992IS6-4#TRMPBFLTC6992IS6-4#TRPBFLT FCS6-Lead Plastic TSOT-23 40 C to 85 CLTC6992HS6-4#TRMPBFLTC6992HS6-4#TRPBFLT FCS6-Lead Plastic TSOT-23 40 C to 125 CLTC6992 MPS6-1#TRMPBFLTC6992 MPS6-1#TRPBFLTDXB6-Lead Plastic TSOT-23 55 C to 125 CLTC6992 MPS6-2#TRMPBFLTC6992 MPS6-2#TRPBFLTDXD6-Lead Plastic TSOT-23 55 C to 125 CLTC6992 MPS6-3#TRMPBFLTC6992 MPS6-3#TRPBFLTFCQ6-Lead Plastic TSOT-23 55 C to 125 CLTC6992 MPS6-4#TRMPBFLTC6992 MPS6-4#TRPBFLTFCS6-Lead Plastic TSOT-23 55 C to 125 CAUTOMOTIVE PRODUCTS**LTC6992IS6-1#WTRMPBFLTC6992IS6 -1#WTRPBFLTDXB6-Lead Plastic TSOT-23 40 C to 85 CLTC6992HS6-1#WTRMPBFLTC6992HS6-1#WTRPBF LTDXB6-Lead Plastic TSOT-23 40 C to 125 CLTC6992IS6-2#WTRMPBFLTC6992IS6-2#WTRPBF LTDXD6-Lead Plastic TSOT-23 40 C to 85 CLTC6992HS6-2#WTRMPBFLTC6992HS6-2#WTRPBF LTDXD6-Lead Plastic TSOT-23 40 C to 125 CLTC6992IS6-3#WTRMPBFLTC6992IS6-3#WTRPBF LTFCQ6-Lead Plastic TSOT-23 40 C to 85 CLTC6992HS6-3#WTRMPBFLTC6992HS6-3#WTRPBF LTFCQ6-Lead Plastic TSOT-23 40 C to 125 CLTC6992IS6-4#WTRMPBFLTC6992IS6-4#WTRPBF LTFCS6-Lead Plastic TSOT-23 40 C to 85 CLTC6992HS6-4#WTRMPBFLTC6992HS6-4#WTRPBF LTFCS6-Lead Plastic TSOT-23 40 C to 125 CContact the factory for parts specified with wider operating temperature ranges.

6 *The temperature grade is identified by a label on the shipping and reel specifications. Some packages are available in 500 unit reels through designated sales channels with #TRMPBF suffix.**Versions of this part are available with controlled manufacturing to support the quality and reliability requirements of automotive applications. These models are designated with a #W suffix. Only the automotive grade products shown are available for use in automotive applications. Contact your local Analog Devices account representative for specific product ordering information and to obtain the specific Automotive Reliability reports for these DFor more information The l denotes the specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25 C.

7 Test conditions are V+ = to , VMOD = 0V to VSET,DIVCODE = 0 to 15 (NDIV = 1 to 16,384), RSET = 50k to 800k, RLOAD = 5k, CLOAD = 5pF unless otherwise CHARACTERISTICSSYMBOLPARAMETERCONDITIONS MINTYPMAXUNITSO scillation FrequencyfOUTO utput fOUTF requency Accuracy (Note 4) fOUT 1 MHz l % fOUT/ TFrequency Drift Over Temperaturel C fOUT/ V+Frequency Drift Over SupplyV+ = to V+ = to %/VLong-Term Frequency Stability(Note 10)90ppm/ kHrPeriod Jitter (Note 9)NDIV = = %RMSNDIV = %RMSP ulse Width Modulation DPWM Duty Cycle AccuracyVMOD = VSET to VSET VMOD = VSET to VSET VMOD < VSET or VMOD > VSET l l % %DMAXM aximum Duty Cycle LimitLTC6992-1/LTC6992-4, POL = 0, VMOD = 1Vl100%LTC6992-2/LTC6992-3, POL = 0, VMOD = Duty Cycle LimitLTC6992-1/LTC6992-3, POL = 0, VMOD = 0Vl0%LTC6992-2/LTC6992-4, POL = 0, VMOD = ,PWMDuty Cycle Settling Time (Note 6)tMASTER = tOUT/NDIV8 tMASTER sPower SupplyV+Operating Supply Voltage Reset CurrentRL = , RSET = 50k, NDIV = 1V+ = AV+ = ARL = , RSET = 50k, NDIV = 4V+ = AV+ = ARL = , RSET = 50k, NDIV 16V+ = AV+ = ARL = , RSET = 800k, NDIV = 1 to 16,384V+ = AV+ = ALTC6992-1/LTC6992-2/LTC6992-3/LTC6992-4 5 Rev.

8 DFor more information The l denotes the specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25 C. Test conditions are V+ = to , VMOD = 0V to VSET,DIVCODE = 0 to 15 (NDIV = 1 to 16,384), RSET = 50k to 800k, RLOAD = 5k, CLOAD = 5pF unless otherwise CHARACTERISTICSSYMBOLPARAMETERCONDITIONS MINTYPMAXUNITSA nalog InputsVSETV oltage at SET VSET/ TVSET Drift Over Temperaturel 75 V/ CRSETF requency-Setting Resistorl50800k MOD Pin Input Pin Input Currentl 10nAVMOD,HIVMOD Voltage for Maximum Duty CycleLTC6992-1/LTC6992-4, POL = 0, D = 100% LTC6992-2/LTC6992-3, POL = 0, D = 95% VSET VSETV VVMOD,LOVMOD Voltage for Minimum Duty CycleLTC6992-1/LTC6992-3, POL = 0, D = 0% LTC6992-2/LTC6992-4, POL = 0, D = 5% VSET VSETV VVDIVDIV Pin Voltagel0V+V VDIV/ V+DIV Pin Valid Code Range (Note 5)Deviation from Ideal VDIV/V+ = (DIVCODE + )/16l Pin Input Currentl 10nADigital OutputIOUT(MAX)Output CurrentV+ = to 20mAVOHHigh Level Output Voltage (Note 7)

9 V+ = IOUT = 1mA IOUT = 16mAl VV+ = IOUT = 1mA IOUT = 10mAl VV+ = IOUT = 1mA IOUT = -8mAl VVOLLow Level Output Voltage (Note 7)V+ = IOUT = 1mA IOUT = 16mAl VV+ = IOUT = 1mA IOUT = 10mAl VV+ = IOUT = 1mA IOUT = 8mAl VtrOutput Rise Time (Note 8)V+ = , RLOAD = V+ = , RLOAD = V+ = , RLOAD = ns nstfOutput Fall Time (Note 8)V+ = , RLOAD = V+ = , RLOAD = V+ = , RLOAD = ns nsLTC6992-1/LTC6992-2/LTC6992-3/LTC6992- 46 Rev. DFor more information 1: Stresses beyond those listed under Absolute Maximum Ratings may cause permanent damage to the device. Exposure to any Absolute Maximum Rating condition for extended periods may affect device reliability and 2: The LTC6992C is guaranteed functional over the operating temperature range of 40 C to 85 3: The LTC6992C is guaranteed to meet specified performance from 0 C to 70 C.

10 The LTC6992C is designed, characterized and expected to meet specified performance from 40 C to 85 C but it is not tested or QA sampled at these temperatures. The LTC6992I is guaranteed to meet specified performance from 40 C to 85 C. The LTC6992H is guaranteed to meet specified performance from 40 C to 125 C. The LTC6992MP is guaranteed to meet specified performance from 55 C to 125 4: Frequency accuracy is defined as the deviation from the fOUT equation, assuming RSET is used to program the 5: See Operation section, Table 1 and Figure 2 for a full explanation of how the DIV pin voltage selects the value of 6: Duty cycle settling time is the amount of time required for the output to settle within 1% of the final duty cycle after a 10% change in the setting ( 80mV step in VMOD).Note 7: To conform to the Logic IC Standard, current out of a pin is arbitrarily given a negative 8: Output rise and fall times are measured between the 10% and the 90% power supply levels with 5pF output load.